Infernal Resistance. Zyra has resistance to fire damage.

Manifest Shadow.  Zyra can manifest shadowstuff to form blades of shadow at will, using them in combat as Shadow Daggers.

Assassinate. During her first turn, Zyra has advantage on attack rolls against any creature that hasn't taken a turn. Any hit the assassin scores against a surprised creature is a critical hit.

Evasion. If Zyra is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, the assassin instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Sneak Attack. Once per turn, Zrya deals an extra 14 (4d6) sneak attack damage when it hits a target with a weapon attack and has advantage on the attack roll, or when the target is within 5 feet of an ally of the assassin that isn't incapacitated and the assassin doesn't have disadvantage on the attack roll.

Multiattack. Zyra makes two dagger attacks.

Shadow Daggers. Melee or Ranged Weapon Attack: +8 to hit, reach 5 ft. or range (20/60), one target. Hit: 8 (1d8 + 4) piercing damage, plus 4 (1d8) necrotic damage.